Abstract:
Die Erfindung betrifft eine erste Leiterplatte (ELP) mit einer Kontaktfläche (KF) und eine Anordnung. Um eine Kontaktfläche (KF) auf einer Leiterplatte (ELP) zu gestalten, die sich mit einer Vielzahl von Verbindungselementen (VE) unterschiedlicher Form und Größe sicher kontaktieren lässt, umfasst die Kontaktfläche (KF) einen zentralen Kontaktpunkt und einen diesen zentralen Kontaktpunkt umgebenden konzentrischen Ring. Um eine Anordnung von erster Leiterplatte (ELP), Verbindungselement (VE) und zweiter Leiterplatte (ZLP) anzugeben, bei der eine Vielzahl von Verbindungselementen (VE) unterschiedlicher Form und Größe verwendet werden können und die eine sichere Kontaktierung zwischen Verbindungselement (VE) und den beiden Leiterplatten (ELP, ZLP) gewährleistet, ist das Verbindungselement (VE) a) an einer ersten Seite mit der zweiten Leiterplatte (ZLP) elektrisch kontaktiert und b) umfasst an einer der ersten Seite gegenüberliegenden Seite ein erstes Federelement (FE1) und mindestens ein zweites Federelement (FE2, FE3), wobei das erste Federelement (FE1) mit dem zentralen Kontaktpunkt der ersten Leiterplatte (ELP) und das mindestens eine zweite Federelement (FE2, FE3) mit dem konzentrischen Ring der ersten Leiterplatte (ELP) elektrisch kontaktiert ist.
Abstract:
A wiring board for mounting an LED bare chip capable of firmly joining an LED bare chip and improving yield. A printed wiring board (2), wherein the interval D between oppositely-disposed wiring patterns (81, 85) in a relevant opposing region is the smallest at a portion close to the center (point G) of an LED chip (14) when it is disposed at a designed position and is gradually larger as it is increasingly separated from the point G, in addition, the pattern edges (83, 87) of the wiring patterns (81, 85) at a portion where the interval is larger are formed to be gradually separated from each other with respect to the electrode edges (148, 149) of the LED chip (14) in the direction of widening the interval as they are increasingly separated from the point G.
Abstract:
Each wiring pattern is composed of a conductor layer and a tin plating layer, and includes a tip portion, a connection portion and a signal transmission portion. The width of the tip portion is equal to the width of the signal transmission portion, and the width of the connection portion is smaller than the widths of the tip portion and the signal transmission portion. The connection portions of wiring patterns and bumps of an electronic component are connected to one another, respectively, by heat-sealing when the electronic component is mounted. Respective distances A1, A2 are set to not less than 0.5 µm. Respective distances B1, B2 are set to not less than 20 µm. The thickness of the tin plating layer is set to not less than 0.07 µm and not more than 0.25 µm.
Abstract:
A high-frequency switching module is described for use mainly In a communications apparatus and high-frequency apparatus equipped with the same. The high-frequency switching module has a group of high-frequency terminals (6a, 10a, 11a, 13a) provided on a mounting side surface (102) of a multi-layer assembly (1) of which the lateral sides (103) are not provided with electrodes for high-frequency terminals. Thus, the high-frequency switching module and high-frequency apparatus equipped with the same are less susceptible to external effects.
Abstract:
An electronics device comprising a carrier, such as a printed circuit board, a substrate or a chip, and an electric conductor on a surface of the carrier. The surface of the conductor (2) facing away from the carrier has a surface structure (3, 4; 6, 7) in the form of flanges which are defined by etched grooves.
Abstract:
The invention relates to an electrical circuit placed on a substrate (10) with at least one component (30; 40) which is fastened to a conductor track layer (20; 21; 22; 23; 24; 25) and which is surrounded by recesses (50; 51; 60) provided in the conductor track layer. The invention also relates to a substrate comprising at least one conductor track layer for fastening at least one electrical component, whereby the conductor track layer is provided with recesses that form a flow barrier for a joining material used for fastening the component. Said recesses surround an area for fastening the component and are interspaced in such a manner that the component has space between the recesses without the recesses having to be covered by the component.
Abstract:
A flexible circuit (300) having vias (456) disposed to minimize discontinuity in a ground plane (306) separating opposing transmission lines. The flex circuit (300) comprises a first transmission line (304) coupled to a first surface, a second transmission line (302) coupled to a second opposing surface and a ground plane (306) separating the first transmission line (304) and the second transmission line (302). The flexible circuit (300) also includes a first type of electrical connection pads (456) disposed on the first surface, and electrically coupled to the first transmission line (304). The flexible circuit (300) also includes a second type of electrical connection pads (314) disposed on the second surface, and electrically coupled to the second transmission line (302) wherein the second type of electrical connection pads (304) have a higher areal density than the first type of electrical connection pads (456). The flexible circuit (300) also includes vias (455) disposed proximate the first type of electrical connection pads (456) and extended through the ground plane (306) to provide for electrically coupling the first transmission line (304) and the second transmission line (302), such that the vias (455) reduce discontinuity in the ground plane (306) and aggregate discontinuity in the flex circuit (300).
Abstract:
A method for mounting terminal on circuit board includes an applying process for applying solder paste (3) to a desired circuit board (1), a laying process for laying the connecting ends (4a) of terminals (4) having the connecting ends (4a) and non-connecting ends (4b) on the parts coated with the paste (3), and a heating process for melting the paste (3) for soldering the connecting ends (4a) to the board (1). In the applying process, a plurality of sets of solder paste applying parts (3a-3d) which are separated from each other are provided on the board (1). In the laying process, each connecting end (4a) is laid across each set of parts (3a-3d).
Abstract:
Die vorliegende Erfindung schafft eine Leiterplattenanordnung 1 und ein Verfahren zur Bestückung derselben mit einer Leiterplatte 2 und mehreren auf der Leiterplatte 2 angeordneten Anschlusseinrichtungen 3, wobei jede Anschlusseinrichtung 3, 3' wenigstens einen Bauelement-Bestückungsabschnitt 31 und wenigstens einen Verbindungsabschnitt 32 für wenigstens eine benachbarte Anschlusseinrichtung 3, 3' aufweist, wobei benachbarte Verbindungsabschnitte 32 unter Bildung eines leicht überbrückbaren Spaltes 6 einander formangepasst sind.